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/*@@
@file String.c
@date Tue May 2 10:44:19 2000
@author Tom Goodale
@desc
Routines dealing with strings.
@enddesc
@version $Header$
@@*/
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include "util_String.h"
#include "cctk_Flesh.h"
static const char *rcsid = "$Header$";
CCTK_FILEVERSION(util_String_c)
/********************************************************************
********************* Local Data Types ***********************
********************************************************************/
/********************************************************************
********************* Local Routine Prototypes *********************
********************************************************************/
/********************************************************************
********************* Other Routine Prototypes *********************
********************************************************************/
/********************************************************************
********************* Local Data *****************************
********************************************************************/
/********************************************************************
********************* External Routines **********************
********************************************************************/
/*@@
@routine CCTK_StrSep
@date Tue May 2 10:29:07 2000
@author Tom Goodale
@desc
The strsep() function returns the next token from the string stringp which is delimited by delim. The token
is terminated with a `\0' character and stringp is updated to point past the token.
RETURN VALUE
The strsep() function returns a pointer to the token, or NULL if delim is not found in stringp.
@enddesc
@calls
@calledby
@history
@endhistory
@var stringp
@vdesc The string to search for a token in.
@vtype const char **stringp
@vio inout
@vcomment
@endvar
@var delim
@vdesc The delimiter
@vtype const char *delim
@vio in
@vcomment
@endvar
@returntype const char *
@returndesc
a pointer to the token, or NULL if delim is not found in stringp.
@endreturndesc
@@*/
const char *Util_StrSep(const char **stringp, const char *delim)
{
int retlength = 0;
static char *retval = NULL;
char *temp;
const char *start;
const char *end;
start = *stringp;
end = strstr(start, delim);
/* Is the delimiter part of the string */
if(end)
{
if(retlength < (end-start)+1)
{
temp = realloc(retval, (end-start+1));
if(temp)
{
retval = temp;
retlength = end-start+1;
}
else
{
free(retval);
retval = NULL;
retlength = 0;
}
}
if(retval)
{
strncpy(retval, start, (size_t)(end-start));
retval[end-start] = '\0';
*stringp = end+strlen(delim);
}
}
else
{
free(retval);
retval = NULL;
retlength = 0;
}
return retval;
}
/*@@
@routine Util_SplitString
@date Wed Jan 20 10:14:00 1999
@author Tom Goodale
@desc
Splits a string into two parts at the given seperator.
Assigns memory for the two resulting strings, so this should be freed
when no longer needed.
@enddesc
@calls
@calledby
@history
@endhistory
@var before
@vdesc String before seperator
@vtype char **
@vio out
@vcomment
@endvar
@var after
@vdesc String after seperator
@vtype char **
@vio out
@vcomment
@endvar
@var string
@vdesc String to seperate
@vtype const char *
@vio in
@vcomment
@endvar
@var sep
@vdesc String seperator
@vtype const char *
@vio in
@vcomment
@endvar
@returntype int
@returndesc
0 - success
1 - seperator not found
2 - out of memory
@endreturndesc
@@*/
int Util_SplitString(char **before, char **after, const char *string, const char *sep)
{
int retval=0;
char *position;
/* Find location of the seperator */
position = strstr(string, sep);
if(position)
{
/*Allocate memory for return strings. */
*before = (char *)malloc((size_t)((position-string+1)*sizeof(char)));
*after = (char *)malloc((size_t)((strlen(string)-(position-string)-strlen(sep)+1)*sizeof(char)));
/* Check that the allocation succeeded. */
if(!*before || !*after)
{
free(*before);
*before = NULL;
free(*after);
*after = NULL;
retval = 2;
}
else
{
retval = 3;
}
}
else
{
*before = NULL;
*after = NULL;
retval = 1;
}
if(position && *before && *after)
{
/* Copy the data */
strncpy(*before, string, (int)(position-string));
(*before)[(int)(position-string)] = '\0';
strncpy(*after, position+strlen(sep), strlen(string)-(int)(position-string)-strlen(sep));
(*after)[strlen(string)-(position-string)-strlen(sep)] = '\0';
retval = 0;
}
return retval;
}
/*@@
@routine Util_Strdup
@date Thu Mar 28 11:20:27 2000
@author Gerd Lanfermann
@desc
Homegrown ersion of strdup, since it's not guaranteed to be there.
@enddesc
@calls
@calledby
@history
@endhistory
@var s
@vdesc string to be duplicated
@vtype const char *
@vio in
@vcomment
@endvar
@returntype char *
@returndesc
the duplicate string.
@endreturndesc
@@*/
char *Util_Strdup(const char *s)
{
char *retstr=NULL;
retstr = (char*) malloc((strlen(s)+1)*sizeof(char));
if(retstr)
{
strcpy(retstr,s);
}
return retstr;
}
/*@@
@routine Util_StrCmpi
@date Mon Jul 5 01:19:00 1999
@author Tom Goodale
@desc
Case independent strcmp
@enddesc
@calls
@calledby
@history
@hdate Wed Oct 13 15:30:57 1999 @hauthor Tom Goodale
@hdesc Checks the length of the two string first.
@endhistory
@var string1
@vdesc First string in comparison
@vtype const char *
@vio in
@vcomment
@endvar
@var string2
@vdesc Second string in comparison
@vtype const char *
@vio in
@vcomment
@endvar
@returntype int
@returndesc
+ve - string1 > string2
0 - string1 = string2
-ve - string1 < string2
@endreturndesc
@@*/
int Util_StrCmpi(const char *string1, const char *string2)
{
int retval;
int position;
retval = 0;
if(! retval)
{
for(position = 0;
string1[position] && string2[position];
position++)
{
if((retval = (tolower(string1[position]) - tolower(string2[position]))))
{
break;
}
}
}
if(! retval)
{
retval = strlen(string1) - strlen(string2);
}
return retval;
}
/*@
@routine Util_SplitFilename
@date Wed Oct 4 10:14:00 2000
@author Gabrielle Allen
@desc
Splits a filename into its directory and basic filename parts.
Assigns memory for the two resulting strings, so this should be freed
when no longer needed.
@enddesc
@calls
@calledby
@history
@endhistory
@var dir
@vdesc The directory part
@vtype char **
@vio out
@vcomment
@endvar
@var file
@vdesc The file part
@vtype char **
@vio out
@vcomment
@endvar
@var string
@vdesc The string to split
@vtype const char *
@vio out
@vcomment
@endvar
@returntype int
@returndesc
0 - success
-1 - out of memory
@endreturndesc
@@*/
int Util_SplitFilename(char **dir, char **file, const char *string)
{
int retval=-1;
char *position=NULL;
char *copy;
copy = Util_Strdup(string);
/* Find location of the seperator */
position = strrchr(copy, '/');
if(position)
{
retval = 0;
*file = position+1;
*dir = copy;
strcpy(position,"");
}
else
{
*file = copy;
*dir = NULL;
}
return retval;
}
/********************************************************************
********************* Local Routines *************************
********************************************************************/
#ifdef TEST_Util_STRSEP
#include <stdio.h>
int main(int argc, char *argv[])
{
const char *argument;
char *delim;
const char *token;
if(argc < 3)
{
printf("Usage: %s <string> <delim>\n", argv[0]);
exit(1);
}
argument = argv[1];
delim = argv[2];
while((token = Util_StrSep(&argument, delim)))
{
printf("Token is '%s'\n", token);
}
if(argument - argv[1] < strlen(argv[1]))
{
printf("Remainder is '%s'\n", argument);
}
return 0;
}
#endif /*TEST_CCTK_STRSEP */
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